<template>
  <div>
    <!--      面包屑导航-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!--            卡片式图-->
    <el-card>
      <!--        添加角色按钮区域-->
      <el-row>
        <el-col>
          <el-button class="edit" type="primary" @click="addDialogVisible=true">添加角色</el-button>
        </el-col>
      </el-row>
      <!--        角色列表区域-->
      <el-table :data="rolesList" border stripe>
        <!--          展开列-->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row :class="['bdbottom',i1===0?'bdtop':'','vcenter']" v-for="(item1,i1) in scope.row.children" :key="item1.id">
              <!--                渲染一级权限-->
              <el-col :span="5">
                <el-tag closable @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!--                渲染二级三级权限-->
              <el-col :span="19">
                <!--                  通过for循环潜逃渲染二级权限-->
                <el-row :class="[i2===0?'':'bdtop','vcenter']" v-for="(item2,i2) in item1.children" :key="item2.id">
                  <el-col :span="6">
                    <el-tag type="success" closable @close="removeRightById(scope.row,item2.id)">{{item2.authName}}</el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag type="warning" v-for="item3 in item2.children" :key="item3.id" closable @close="removeRightById(scope.row,item3.id)">
                      {{item3.authName}}
                    </el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <!--          索引列-->
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <!--              修改按钮-->
            <el-button size="mini" type="primary" icon="el-icon-edit" @click="showEditDialog(scope.row.id)">编辑</el-button>
            <!--              删除按钮-->
            <el-button  size="mini" type="danger" icon="el-icon-delete" @click="removeRoleById(scope.row.id)">删除</el-button>
            <!--              分配角色-->
            <el-button size="mini" type="warning" icon="el-icon-setting" @click="showSetRightDialog(scope.row)" @close="setRightDialogClosed">分配权限</el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <!--      添加角色对话框-->
    <el-dialog
      title="添加角色"
      :visible.sync=" addDialogVisible"
      width="50%"
      @close="addDialogClosed">
      <el-form ref="addFormRef" :rules="addFormRules" :model="addForm" label-width="80px">
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="addForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="addForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
    <el-button @click="addRole">取 消</el-button>
    <el-button type="primary" @click="addRole">确 定</el-button>
      </span>
    </el-dialog>
    <!--      修改角色对话框-->
    <el-dialog
      title="修改角色"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="editForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="editForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editRoleInfo">确 定</el-button>
  </span>
    </el-dialog>
    <!--      修改权限对话框-->
    <el-dialog
      title="分配权限"
      :visible.sync="setRightDialogVisible"
      width="50%">
      <!--        树形控件-->
      <el-tree :data="rightsList" ref="treeRef" :props="treeProps" show-checkbox node-key="id" default-expand-all :default-checked-keys="defKeys"></el-tree>
      <span slot="footer" class="dialog-footer">
    <el-button @click="setRightDialogVisible = false">取 消</el-button>
    <el-button type="primary"  @click="allotRights">确 定</el-button>
  </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: 'Roles',
  data() {
    return {
      // 所有角色列表数据
      rolesList: [],
      addDialogVisible: false,
      editDialogVisible: false,
      setRightDialogVisible: false,
      addForm: {
        roleName: '',
        roleDesc: ''
      },
      addFormRules: {
        roleName: [
          {
            required: true,
            message: '请输入角色名',
            trigger: 'blur'
          },
          {
            min: 1,
            max: 10,
            message: '角色名长度在1-10位之间',
            trigger: 'blur'
          }
        ]
      },
      editForm: {},
      editFormRules: {
        roleName: [
          {
            required: true,
            message: '请输入角色名',
            trigger: 'blur'
          },
          {
            min: 1,
            max: 10,
            message: '角色名长度在1-10位之间',
            trigger: 'blur'
          }
        ]
      },
      // 所有权限数据
      rightsList: [],
      // 树形控件的属性绑定
      treeProps: {
        label: 'authName',
        children: 'children'
      },
      // 默认选中的节点数组
      defKeys: [],
      roleId: ''
    }
  },
  created () {
    // 获取角色列表数据
    this.getRolesList()
  },
  methods: {
    async getRolesList() {
      const { data: res } = await this.$http.get('roles/')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      this.rolesList = res.data
      // console.log(this.rolesList)
    },
    // 点击按钮添加新角色事件
    addRole() {
      this.$refs.addFormRef.validate(async valid => {
        console.log(valid)
        if (!valid) return
        const { data: res } = await this.$http.post('roles', this.addForm)
        if (res.meta.status !== 201) {
          this.$message.error('添加角色状态失败')
        }
        this.$message.success('添加角色状态成功！')
        this.addDialogVisible = false
        // 重新获取角色列表
        this.getRolesList()
      })
    },
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    // 展示角色编辑对话框
    async showEditDialog(id) {
      // eslint-disable-next-line no-unused-vars
      console.log(id)
      const { data: res } = await this.$http.get('roles/' + id)
      if (res.meta.status !== 200) {
        return this.error('修改角色信息失败！')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 编辑角色对话框关闭触发
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 修改角色信息并提交
    editRoleInfo() {
      this.$refs.editFormRef.validate(async valid => {
        // eslint-disable-next-line no-useless-return
        if (!valid) return
        // 发起修改信息请求
        const { data: res } = await this.$http.put('roles/' +
            this.editForm.roleId,
        {
          roleName: this.editForm.roleName,
          roleDesc: this.editForm.roleDesc
        })
        if (res.meta.status !== 200) {
          return this.$message.error('更新角色信息失败！')
        }
        // 关闭对话框
        this.editDialogVisible = false
        // 刷新数据列表
        this.getRolesList()
        // 提示修改成功
        this.$message.success('更新角色信息成功')
      })
    },
    // 根据ID删除角色
    async removeRoleById(id) {
      // 询问用户是否删除
      const confirmResult = await this.$confirm('此操作将永久删除该角色, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(error => error)
      // 删除确定为confirm，取消为cancel
      if (confirmResult !== 'confirm') {
        return this.$message.info('取消删除角色')
      }
      const { data: res } = await this.$http.delete('roles/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除角色失败！')
      }
      this.$message.success('删除角色成功')
      this.getRolesList()
    },
    // 根据id删除权限
    async removeRightById(role, rightId) {
      // 弹框提示是否删除
      const confirmResult = await this.$confirm('此操作将永久删除该权限是否继续？', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(error => error)
      if (confirmResult !== 'confirm') {
        return this.$message.info('取消删除权限')
      }
      const { data: res } = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除权限失败！')
      }
      role.children = res.data
    },
    // 展示分配权限对话框
    async showSetRightDialog(role) {
      this.roleId = role.id
      // 获取所有权限数据
      const { data: res } = await this.$http.get('rights/tree')
      if (res.meta.status !== 200) {
        return this.$message.error('获取权限数据失败！')
      }
      // 把获取到的权限数据保存到 data 中
      this.rightsList = res.data
      // //  递归获取三级菜单
      this.getLeafKeys(role, this.defKeys)
      this.setRightDialogVisible = true
    },
    // 通过递归，获取三级菜单ID，到存到 defKeys 中
    getLeafKeys(node, arr) {
      // 如果当前节点无children属性，则是三级节点
      if (!node.children) {
        return arr.push(node.id)
      }
      node.children.forEach(item => {
        this.getLeafKeys(item, arr)
      })
    },
    // 监听分配权限对话框关闭
    setRightDialogClosed() {
      this.defKeys = []
    },
    // 点击为角色分配权限
    async allotRights() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]
      const idstr = keys.join(',')
      // eslint-disable-next-line no-template-curly-in-string
      const { data: res } = await this.$http.post(`roles/${this.roleId}/rights`, { rids: idstr })
      if (res.meta.status !== 200) {
        return this.$message.error('分配权限失败！')
      }
      this.$message.success('分配权限成功！')
      this.getRolesList()
      this.setRightDialogVisible = false
    }
  }
}
</script>

<style lang="less" scoped>
  .bdtop{
    border-top:1px solid  #eee;
  }
  .bdbottom{
    border-bottom:1px solid  #eee;
  }
  .vcenter{
    display:flex;
    align-items: center;
  }
</style>
